US M1 combat helmet

Shell only.

The shells rim is edged in stainless steel with the seam at front visor with two spot weld marks to interior. On either side, spot welded in place, hinged loops as introduced in 1943 until October 1944.

The letter S indicates the manufacturer SHUELTER. Due to its characteristics, this helmet was produced from October 1943 to October 1944.
Found in France not long ago.